Circuit Descriptions
7.
7.4.5
Audio Amplifier (U602)
The platform use I
2
S to link audio amplifier IC.
Figure 7-8 Audio Amplifier (U602)
7.4.6
Tuner power
AOZ1242AI provides the tuner power of approximately 5 V.
Figure 7-9 Tuner power
19190_214_110905.eps
110905
OSDA0
AOLRCK
AMP_PLL#
C631
0.47uF 16V
AM
P_LB
AMP_DEF
R651
33R 1/16W 5%
AMP_PWR
AM
P_LA
AM
P_
S
A0
OSCL0
AM
P_
S
A1
AM
P_ER
R
OR
#
AM
P_PD
#
AMP_MONO
H: ON
L: Pow er Dow n
AOMCLK
U602
AD82587-LE48NAY
1
2
3
4
5
6
7
8
9
10
11
12
1
3
14
15
16
17
1
8
19
20
21
22
2
3
24
25
26
27
28
29
30
31
32
33
34
35
36
3
7
38
3
9
40
41
42
4
3
44
45
46
47
4
8
49
VDDLA
NC
NC
NC
NC
PLL
MCLK
CLK_OUT
DGND
DVDD
DEF
SDATA
NC
MO
NO
L
RCIN
BC
LK
PD
E
RRO
R
RE
S
ET
S
A0
S
A1
NC
NC
S
CL
SDA
DGND
DVDD
NC
NC
NC
NC
NC
NC
NC
NC
VDDRA
RA
NC
GN
D
R
NC
RB
VD
D
R
B
VD
D
LB
LB
NC
G
NDL
NC
LA
T
H
ER
M
ALPAD
R649
33R 1/16W 5%
R650
33R 1/16W 5%
DVDD3V3_AMP
R648
33R 1/16W 5%
AMP_PD#
AM
P_R
B
AMP GND
AM
P_R
E
S
ET
#
AMP_PD#
AOSDATA0
DVDD3V3_AMP
AOBCLK
R654
0R05 1/16W
AM
P_ER
R
OR
#
AM
P_R
A
19190_210_110905.eps
110926
5V_TUNER
R734
47K 1/16W 5%
U703
AOZ1242AI
1
2
3
4
5
6
7
8
LX
BST
GND
FB
COMP
EN
VIN
VBIAS
D702
SX34
1
2
C739
NC/1UF 10V
5V_BUCK
C732
1
8
0P 50V
C731
1uF 50V
C738
NC/1UF 10V
FB725
NC/120R/3000mA
1
2
C734
1uF 25V
L703
15uH
C737
10uF 25V
FB723
120R/3000mA
1
2
5.2 V Main Power (3 A)
FB724
120R/3000mA
1
2
C736
10uF 25V
C733
1.2nF 50V
R736
56K 1%
BUCK_USB2
FB722
NC/120R/3000mA
1
2
FB721
NC/120R/3000mA
1
2
5V_BUCK
+12V
24V_12V_SW
18V4_BUCK
5V_BUCK
C730
1uF 50V
R735
15K 1/16W 5%
R737
10K 1%
C735
100N 50V
FB720
120R/3000mA
1
2
+
C729
100UF 50V